Adhesive film spot welding device

Abstract

The utility model discloses an adhesive film spot welding device which comprises supports, a motor, a conveying belt, a cross beam and a spot welding assembly, the motor and the conveying belt are installed on the supports, the motor is connected with the conveying belt, the cross beam is arranged between the two supports, the two ends of the cross beam are fixedly installed on the conveying belt, and the spot welding assembly is connected with the cross beam. The spot welding assembly is fixedly installed on the cross beam, the spot welding assembly comprises a fixing piece, an electric heating rod, spring ring sleeves and a heat insulation plate, the fixing piece is fixedly installed on the cross beam, the electric heating rod is fixedly installed in the middle of the fixing piece, the two sides of the electric heating rod are each provided with one spring ring sleeve, and the heat insulation plate is fixedly installed on the fixing piece. The heat insulation plate is fixedly installed at the bottom end of the spring ring sleeve, and a fluorine-containing coating is arranged on the lower surface of the heat insulation plate. According to the adhesive film spot welding device, the fluorine-containing coating preferentially makes contact with the adhesive film, so that the adhesive film is pressed on glass, the effect of exhausting air in a spot welding area is achieved, and the spot welding effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic encapsulation film, in particular to a film spot welding device. Background Art

[0002] POE resin is a non-polar material, while most of the additives added in the film production are polar, and their compatibility is poor, and the additives are easy to precipitate. As a result, the POE film is prone to slip with the glass during the manufacturing process of photovoltaic modules, affecting production capacity and resulting in overall displacement defects, leading to module degradation.

[0003] The prior art focuses on realizing spot welding and fixing of the film to the glass or the bus bar, but ignores that the film is prone to adhere to the welding head at high temperature during the film spot welding process. When the welding head rises, it will drive the film to lift. The bonding force between the molten film and the glass is poor and easy to peel off, thus losing the meaning of spot welding. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a film spot welding device to solve the defects mentioned in the above background art.

[0005] To achieve the above purpose, a film spot welding device is provided, including: a film spot welding device, including: a bracket, a motor, a conveyor belt, a cross beam and a spot welding component. The motor and the conveyor belt are installed on the bracket, the motor is connected to the conveyor belt, the cross beam is arranged in the middle of the two brackets, both ends of the cross beam are fixedly installed on the conveyor belt, the spot welding component is fixedly installed on the cross beam, and the spot welding component includes: a fixing piece, an electric heating rod, a spring coil sleeve and a heat insulation plate. The fixing piece is fixedly installed on the cross beam, the electric heating rod is fixedly installed in the middle of the fixing piece, a spring coil sleeve is arranged on each side of the electric heating rod, the heat insulation plate is fixedly installed at the bottom end of the spring coil sleeve, and a fluorine-containing coating is arranged on the lower surface of the heat insulation plate.

[0006] Further, the height of the electric heating rod is at least 0.1 mm lower than that of the fluorine-containing coating.

[0007] Further, at least two groups of the spot welding components are fixedly installed on the cross beam.

[0008] Further, a production line station is arranged below the spot welding component, a photovoltaic glass is placed on the production line station, and a film is covered on the photovoltaic glass.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] 1. At the beginning of the spot welding process, the fluorine-containing coating contacts first instead of the film, pressing the film on the glass, which has the function of discharging the air in the spot welding area and improving the spot welding effect.

[0011] 2. A fluorine-containing coating is added to the lower surface of the heat insulation plate to reduce the influence of spot welding transposition on the periphery of the adhesive film.

[0012] 3. After the spot welding operation is completed, the heating rod is separated from the adhesive film, and the heat insulation plate with the fluorine-containing coating still presses on the adhesive film to prevent the molten adhesive film from sticking to the head of the electric heating rod and being lifted by the head of the electric heating rod, resulting in the separation of the adhesive film from the glass and losing the bonding improvement of the anti-slip effect. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the present utility model;

[0014] Figure 2 It is a schematic structural diagram of the spot welding assembly of the present utility model.

[0015] Reference numerals in the figure: 1, bracket; 2, conveyor belt; 3, motor; 4, cross beam; 5, spot welding assembly; 51, fixing member; 52, electric heating rod; 53, spring sleeve cylinder; 54, heat insulation plate; 55, fluorine-containing coating; 6, adhesive film; 7, assembly line; 8, photovoltaic glass. Detailed Embodiment

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figure 1 - Figure 2 , the present utility model provides a device for spot welding an adhesive film, including a bracket 1, a motor 3, a conveyor belt 2, a cross beam 4, and a spot welding assembly 5.

[0018] The motor 3 and the conveyor belt 2 are installed on the bracket 1, and the motor 3 is connected to the conveyor belt 2.

[0019] The cross beam 4 is arranged between the two brackets 1, and both ends of the cross beam 4 are fixedly installed on the conveyor belt 2. Two groups of the spot welding assemblies 5 are fixedly installed on the cross beam 4.

[0020] Below the spot welding assembly 5 is the assembly line 7 station. The photovoltaic glass 8 is placed on the assembly line 7 station, and the adhesive film 6 is covered on the photovoltaic glass 8. The servo transmits a signal to the motor 3, and the motor 3 controls the conveyor belt 2 to drive the spot welding cross beam 4 to move up and down to complete the spot welding operation.

[0021] The spot welding assembly 5 includes: a fixing member 51, an electric heating rod 52, a spring coil sleeve 53, and a heat insulation plate 54. The fixing member 51 is fixedly installed on the cross beam 4. The electric heating rod 52 is fixedly installed in the middle of the fixing member 51. One spring coil sleeve 53 is arranged on each side of the electric heating rod 52. The heat insulation plate 54 is fixedly installed at the bottom end of the spring coil sleeve 53. A fluorine-containing coating 55 is provided on the lower surface of the heat insulation plate 54.

[0022] The spring coil sleeve 53 generates vertical displacement during the spot welding operation and can undergo displacement deformation at the same time.

[0023] When the electric heating rod 52 is in its original position, the height of the electric heating rod 52 is 0.1 mm lower than that of the fluorine-containing coating 55.

[0024] During the downward pressing process of the spring sleeve, the fluorine-containing coating 55 on the heat insulation plate 54 first contacts and presses the adhesive film 6, reducing the scalding of the remaining area of the adhesive film 6 and compacting the adhesive film 6 and the photovoltaic glass 8.

[0025] At high temperature, the electric heating rod 52 continues to move downward, melting and bonding the adhesive film 6 onto the glass.

[0026] Working principle: The photovoltaic glass 8 flows onto the assembly line 7 below the spot welding device. After laying the adhesive film 6, the servo transmits a signal to the motor 3. The motor 3 drives the conveyor belt 2 to move, causing the spot welding cross beam 4 to move downward, thereby causing the spot welding assembly 5 to press downward. During the downward pressing process of the spot welding assembly 5, the fluorine-containing coating 55 first contacts and presses the adhesive film 6. Under the action of pressure, the spring on the spring coil sleeve 53 deforms and contracts. Then the electric heating rod 52 presses downward to contact the adhesive film 6, and heating causes the adhesive film 6 to melt and fix the adhesive film 6 to the photovoltaic glass 8. After the spot welding operation is completed, the servo transmits a signal to the motor 3. The motor 3 drives the conveyor belt 2 to move, causing the spot welding cross beam 4 to move upward, thereby causing the spot welding assembly 5 to move upward. The heating rod first leaves the adhesive film 6, and the spring on the spring coil sleeve 53 restores its deformation. During this period, the fluorine-containing coating 55 always presses the adhesive film 6, and then the entire fluorine-containing coating 55 leaves the adhesive film 6; this is the entire process of the operation of this adhesive film spot welding device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film spot welding device, comprising: Bracket (1), motor (3), conveyor belt (2), cross beam (4) and spot welding assembly (5). The motor (3) and the conveyor belt (2) are installed on the bracket (1), the motor (3) is connected to the conveyor belt (2), the cross beam (4) is arranged between two brackets (1), and both ends of the cross beam (4) are fixedly installed on the conveyor belt (2). The spot welding assembly (5) is fixedly installed on the cross beam (4), and is characterized in that: the spot welding assembly (5) includes: a fixing member (51), an electric heating rod (52), a spring coil sleeve (53) and a heat insulation plate (54). The fixing member (51) is fixedly installed on the cross beam (4), the electric heating rod (52) is fixedly installed in the middle of the fixing member (51), one spring coil sleeve (53) is arranged on each side of the electric heating rod (52), the heat insulation plate (54) is fixedly installed at the bottom end of the spring coil sleeve (53), and a fluorine-containing coating (55) is provided on the lower surface of the heat insulation plate (54).

2. The film spot welding device according to claim 1, wherein: The height of the electric heating rod (52) is at least 0.1 mm lower than that of the fluorine-containing coating (55).

3. The film spot welding device according to claim 1, wherein: At least two groups of the spot welding assemblies (5) are fixedly installed on the cross beam (4).

4. A film spot welding device according to claim 1, characterized in that: Below the spot welding assembly (5) is a production line (7) station, on which a photovoltaic glass (8) is placed, and a glue film (6) is covered on the photovoltaic glass (8).

Images